7.6

CVE-2026-80186: bluez Classic Buffer Overflow

CVSS: 7.6v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-80186DEBIAN-CVE-2026-80186
Published 25-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-80186 is a high (CVSS 7.6) Classic Buffer Overflow vulnerability in bluez. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.50%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-8908-1

Timeline

  1. 25-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

+0.09 pp

From 0.41% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • bluezAll versions (No fix recorded) | < 5.87-3
Ubuntu1 product
  • bluez< 5.37-0ubuntu5.3+esm6 | < 5.48-0ubuntu3.9+esm3 | < 5.53-0ubuntu3.9+esm1 | < 5.64-0ubuntu1.5 | < 5.72-0ubuntu5.7 | All versions (No fix recorded) | < 5.85-4ubuntu0.3

2 vendors · 2 products

References

7 links